open somethingup

open up

1to become or make something possible, available, or able to be reachedThe new catalog will open up the market for our products.The transcontinental railroad opened up the American West.Exciting possibilities were opening up for her in the new job.

2to begin business for the day; to start a new businessI open up the store for the day at 9.oppositeclose up

3to start a new businessThere's a new Thai restaurant opening up in town.oppositeclose down

4to develop or start to happen or exist; to develop or start somethingA division has opened up between the two senators over the issue.Scott opened up a 3-point lead in the first game.

5to appear and become wider; to make something wider when it is narrow or closedThe wound opened up and started bleeding.The operation will open up the blocked passages around his heart.oppositeclose up